Danny:
GB is right on about Open Office.
There is also another option available to you. You said your old computer is gone, but do you still have the installation disk from your old version of MS Office? If so, you can install and run that old Office on your new CPU. For example I'm running Windows 7 (64bits), and was initially running Office 97 on it until I got a really good deal on Office 2000, so I upgraded. I'm very happy with 2000.